Answering a distress call, Team Lightyear discovers a ship under attack by Vulturans (a vaguely bird-like race, that XR recognizes as a race that tends to have a thing against robots). Team Lightyear fights them off...but in the battle, XR flies into a mad rage (gets a little "blowie-uppy") and ends up being seriously disassembled. When the LGMs fix him up, they discover signs of metal fatigue. Their report is sent to Commander Nebula, who accidentally spills coffee on the report, smudging the lettering and making it look like "mental fatigue". XR is sent off to the resort world of Mahamba 6 for a weekend pass, before having to take a psychiatric evaluation from Star Command's resident psychiatrist, Dr. Animus (...who resembles a native of Binpinardia...). While on Mahamba 6, XR is picked up by a taxi driver who turns out to be XL (...he sent XR a fake "you have just won a free vacation!!"-flier to XR to lure him in...). XL kidnaps XR and steals his body. XL returns to Star Command, posing as XR, awaiting the arrival of an insanely large bomb that he sent in the mail before abandoning XR's head. XL locks down the exit routes in and out of Star Command, plants the bomb in Star Command's Fusion Core, and then attempts to make his getaway before the bomb goes off (...but he already locked down all the exit routes, remember?...). While trying to escape, XL is picked up by Buzz and taken for his evaluation...which he fails dismally. Meanwhile, XR has managed to wrangle his way onto XL's body. Upon his return to Star Command, XR is mistaken for XL and locked up. When the countdown for the bomb is nigh, both XR and XL are struggling to disarm the bomb, while trying to convince the rest of Team Lightyear that THEY are the "real XR". When XL asks to be put on the "stronger body", and XR asks to be put on the body of a robot ranger, Buzz realizes just one is the real XR. XR defuses the bomb and saves the day.

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